-
All replies
-
Helpful answers
-
Mar 7, 2013 6:29 AM in response to Cheemorxby Klaus1,Resetting the SMU can often cure that. Not sure what iMac you have, so:
Resetting the SMU on a G5 iMac:
http://support.apple.com/kb/HT1767
and on resetting the PMU on a Power Mac G5, G4 and G3 :
http://support.apple.com/kb/HT1939?viewlocale=en_US
http://support.apple.com/kb/HT1436
Resetting the SMC (System Management Controller) on Intel-based Macs:
http://support.apple.com/kb/ht3964 and
http://support.apple.com/kb/HT1237?viewlocale=en_US
Resetting your Mac's PRAM and NVRAM: